// 任务组件
<template>
    <div :class="['todo-item', todo.completed ? 'completed' : '']">
        <input 
            type="checkbox"
            class="toggle"
            v-model="todo.completed"
        >
        <label>{{todo.content}}</label>
        <button class="destory" @click="deleteTodo"></button>
    </div>
</template>

<script>
export default {
    props:{
        todo: {
            type: Object,
            required: true
        }
    },
    methods:{
        deleteTodo(){
            //触发事件给父组件
            this.$emit('del', this.todo.id)
        }
    }
}
</script>

<style lang="stylus" scoped>
.todo-item {
    position: relative;
    background-color: #fff;
    font-size: 24px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);

    &:hover {
        .destory:after {
            content: 'x'
        }
    }

    label {
        white-space: pre-line;
        word-break: break-all;
        padding: 15px 60px 15px 15px;
        margin-left: 45px;
        display: block;
        line-height: 1.2;
        transition: color 0.4s;
    }

    &.completed {
        label {
            color: #d9d9d9;
            text-decoration: line-through;
        }
    }
}

.toggle {
    text-align: center;
    width: 50px;
    height: 30px;
    position: absolute;
    top: 0;
    bottom: 0;
    margin: auto 0;
    border: none;
    appearance: none;
    outline: none;

    &:after {
        content: url('../assets/images/unChecked.svg');
    }

    &:checked:after {
        content: url('../assets/images/checked.svg');
    }
}

.destory {
    position: absolute;
    top: 0;
    right: 10px;
    bottom: 0;
    width: 40px;
    height: 40px;
    margin: auto 0;
    font-size: 30px;
    color: #cc9a9a;
    margin-bottom: 11px;
    transition: color 0.2s ease-out;
    background-color: transparent;
    appearance: none;
    border-width: 0;
    cursor: pointer;
    outline: none;
}
</style>